Manual Interval+ / Manual interval SuuntoPlus App with previous interval insights

[Thibault B.]

Updated on 16 April for version v1.3

Hi everyone,

I’ve released a new version of my SuuntoPlus app Manual Interval+, built for runners who train using the lap button and want a clear, consistent interval screen for any kind of workout.

I originally designed the app because many of my own interval sessions don’t follow a strict “work / rest” pattern. For example: short accelerations inside longer blocks, variable‑pace intervals, fartleks, or pyramid workouts. With many existing manual‑interval apps, the screen automatically switches to a “rest” view as soon as you press Lap, which can hide useful metrics even when you’re still running. I also wanted an easy way to review the previous interval’s data without losing context.

What’s new (9 April update): two modes

Manual Interval+ now offers two modes, selectable directly on the watch during the activity.

INT‑INT mode (fully manual)

• Every lap starts a new interval.
• There is no predefined effort or rest phase — you decide when you are running or resting.
• A Previous Interval panel is available to review the most recent interval’s data:
  • during rest, or
  • after starting the next interval.
• This mode is designed for completely free‑form interval sessions.

INT‑REST mode (alternating display)

• Each Lap toggles between INT (interval) and REST (recovery).
• Phases are clearly labeled (INT 1, REST 1, INT 2…).
• During INT phases, all necessary information are displayed and using the most available space.
• During REST phases, the Previous Interval panel is shown automatically to review the last effort.

Main features

• Clean and readable 2×2 layout for interval or rest phases.
• Tenth‑second lap timing (useful for track repeats).
• Interval/rest average pace, current heart rate, distance, and time.
• Previous Interval panel switching between:
  • previous interval time + average pace
  • previous interval distance + average heart rate
• Alternation between interval number and time of day in the title.
• ZoneSense or heart rate zones are represented by the corresponding color in the heart icon.
• No configuration required before starting.

Compatibility

All Suunto watches were tested using the simulator, and I also tested the app on my own Suunto Race S. Please let me know if you notice any issues on your device.

What’s next

Thanks a lot for the feedback I’ve already received by email and through app reviews — it directly influenced the addition of the INT‑REST mode.

I hope Manual Interval+ proves useful to some of you. I’d be happy to hear your thoughts or improvement ideas once you’ve tried it!

Thibault

[Thibault B.]

Check out the updated version of the app (v1.2a), and consider leaving a review!

I’ve also updated my original post to reflect the actual state of the app.

[Pe Ter]

@Thibault-B. Hi, thanks a lot! I really like your app and your willingness to further improve it. Can’t wait to test the new Int-Rest mode. The temporary “previous interval recap” will be very helpful for me as well, as I am a masters runner with problems reading the small information about the previous interval in the bottom section.

[Anthony Guillemette]

Thank you for this new app — it’s really useful.

I have one suggestion: the ability to reset the interval counter.

In my case, I’d like to do a specific workout with manual intervals based on two sets of 5/3/1 reps. Without being able to reset the counter, it becomes quite difficult to keep track of which rep I’m on, especially when fatigued.

Maybe a long press on the top button could be used to reset the counter?
This way, I can choose to reset the counter either after each sub-block or after each set, making it easier to keep track.

[Thibault B.]

I’ve just released a new version (v1.3b), which adds support for ZoneSense and HR zones. The original post has been updated accordingly.

Thanks everyone for the kind feedback—here, on Reddit, and via email. It’s great to see the app being used!

@pe-ter I’ve been thinking about the idea of a temporary recap screen, and I’m a bit unsure. I try to keep the number of screens to a minimum so it’s easier to remember where everything is—especially when fatigued during intervals. Instead, I’ve been exploring increasing the font size of the previous interval data, but haven’t managed to implement that yet.
That said, if a temporary screen is something that matters to you and others, I’m open to reconsidering it. Making it configurable could also be a good compromise - but I do not want to use Smartphone configuration panel because of this bug: https://forum.suunto.com/topic/14940/bug-maximum-suuntoplus-apps-reached -.

@anthony-guillemette I started thinking about other things requiring the long press on top button, but your suggestion is interesting. I’ll look into how it could be implemented.